Drum Installation:
I installed a 1/2" drum into the breech
area of the barrel. I used a wooden dowel inserted down the barrel, mark the
dowel at the end of the barrel. Then I laid the dowel along the barrel with the
pencil mark at the end of the barrel. Where the end of the dowel was at
the breech, told me where the face of the breech plug was. I made a mark on the
barrel here.
Locating the center of the side flat of the
barrel, I punched the barrel with a center punch for the drill. The drum
is 5/16" X 20 thread, so I used a letter "I" drill
bit.
First I removed the breech plug from the
barrel. Then I placed the swamped barrel onto the drill press table. I leveled
the top face of the barrel to ensure the drill bit was perpendicular to the side
of the barrel. Next I drilled a hole thru the side of the barrel. Note,
you have to go slow because when the drill starts to pass thru, it will grab the
barrel and you do not want to jam the bit, nor make your hole oblong. With
the hole drilled in the barrel, reinstall the breechplug.
Mark the exposed face of the breechplug thru
the drum hole. Note:
I also countersunk the exposed face of the drum. This helps feed powder into the
drum during loading.
Now take the breechplug out of the barrel and
using a round file, file the markings away to make a coned area leading to the
center of the breech plug.
Reinstall the breech plug. You should
now not see any of the exposed breechplug if your removed the correct amount of
steel. If you still see some exposed on the edges, mark it again, remove the
plug and file again. Repeat if necessary.
It should like this when completed.
Remove the drum again. Now you want to screw the drum into the barrel. Prior to
doing so, I countersunk
the area around the drum hole. When the drum is drawn into the hole, it will
pull up the metal and could keep you from getting the drum flat to the side of
the barrel.
With
the drum fully seated to the barrel (you will know this, when you use a pair of vise grips
to turn it into the barrel, the vise grips will slip on the drum, thus marking
it.)
Look inside the barrel and you can see the
drum extends into the barrel.
You
will need to take a round file and file this portion flat to the barrel.
Note, if necessary, you may need to run a flat bottomed tap back
into the breech of the barrel to re-cut threads into the drum for the breech
plug. Then install the breech plug, remove the breech plug to clean up any burrs
on the edge of the drum inlet and reinstall the drum again, tightly.
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